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ES452858A1 - Production of ferrite electrostatographic carrier materials having improved properties - Google Patents

Production of ferrite electrostatographic carrier materials having improved properties

Info

Publication number
ES452858A1
ES452858A1 ES452858A ES452858A ES452858A1 ES 452858 A1 ES452858 A1 ES 452858A1 ES 452858 A ES452858 A ES 452858A ES 452858 A ES452858 A ES 452858A ES 452858 A1 ES452858 A1 ES 452858A1
Authority
ES
Spain
Prior art keywords
ferrite
production
improved properties
carrier materials
approximately
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES452858A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xerox Corp
Original Assignee
Xerox Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of ES452858A1 publication Critical patent/ES452858A1/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/10—Developers with toner particles characterised by carrier particles
    • G03G9/107—Developers with toner particles characterised by carrier particles having magnetic components
    • G03G9/108—Ferrite carrier, e.g. magnetite
    • G03G9/1085—Ferrite carrier, e.g. magnetite with non-ferrous metal oxide, e.g. MgO-Fe2O3
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated
    • Y10T428/2998—Coated including synthetic resin or polymer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Magnetic Ceramics (AREA)

Abstract

Method of preparation of ferrite materials insensitive to moisture for electrostatic support, which consists in preparing an essentially stoichiometric mixture of ferrite-forming metal oxides, in calcining the mixed oxides in air at a temperature of up to approximately 1,177ºC (2,150º f) for a period of time of up to about 30 minutes to give said mixed oxides a magnetic saturation moment including between 6 and 30 electromagnetic units per gram approximately. (Machine-translation by Google Translate, not legally binding)
ES452858A 1975-10-29 1976-10-29 Production of ferrite electrostatographic carrier materials having improved properties Expired ES452858A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/626,907 US4075391A (en) 1975-10-29 1975-10-29 Production of ferrite electrostatographic carrier materials having improved properties

Publications (1)

Publication Number Publication Date
ES452858A1 true ES452858A1 (en) 1978-01-01

Family

ID=24512371

Family Applications (1)

Application Number Title Priority Date Filing Date
ES452858A Expired ES452858A1 (en) 1975-10-29 1976-10-29 Production of ferrite electrostatographic carrier materials having improved properties

Country Status (2)

Country Link
US (1) US4075391A (en)
ES (1) ES452858A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4192902A (en) * 1977-05-02 1980-03-11 Xerox Corporation In situ coating then spray drying of magnetic toner
JPS58166358A (en) * 1982-03-26 1983-10-01 Mita Ind Co Ltd Magnetic toner improved in humidity dependence
US4517274A (en) * 1982-08-31 1985-05-14 Mita Industrial Co., Ltd. Method for developing electrostatic latent images
US4612247A (en) * 1984-06-27 1986-09-16 Cape Cod Research, Inc. Magnetic cellulose-derivative structures
US5120611A (en) * 1985-10-29 1992-06-09 Atsushi Ogura Metal oxide ceramic composite powder and method of manufacturing the same
JPS62105929A (en) * 1985-10-29 1987-05-16 Atsushi Ogura Ferrite ceramic composite particle and production thereof
CA1285002C (en) * 1985-11-29 1991-06-18 Atsushi Ogura Ferrite-ceramic composite and method of manufacturing the same
JP2682623B2 (en) * 1987-03-13 1997-11-26 株式会社リコー Electrophotographic developer
US5505865A (en) * 1989-07-11 1996-04-09 Charles Stark Draper Laboratory, Inc. Synthesis process for advanced ceramics
WO1993004408A1 (en) * 1991-08-16 1993-03-04 Eastman Kodak Company Ferrite green beads and method of producing carrier particles
US5422216A (en) * 1994-03-01 1995-06-06 Steward Developer composition and method of preparing the same
US6316156B1 (en) 1994-06-22 2001-11-13 Canon Kabushiki Kaisha Carrier for electrophotography, two component type developer, and image forming method
US6143456A (en) * 1999-11-24 2000-11-07 Xerox Corporation Environmentally friendly ferrite carrier core, and developer containing same
KR100430464B1 (en) * 1999-12-28 2004-05-10 쇼꾸바이 카세이 고교 가부시키가이샤 Method of forming a silica-containing coating film with a low dielectric constant and semiconductor substrate coated with such a film
JP4861233B2 (en) * 2006-04-17 2012-01-25 株式会社リコー Core particle for electrophotographic developer carrier, production method thereof, electrophotographic developer and image forming method
CN113480342A (en) * 2021-07-29 2021-10-08 兰州市冠涛科技有限责任公司 Humic acid preparation process, and humic acid-containing base fertilizer and fertilizer prepared by process

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1671007B2 (en) * 1965-11-23 1971-04-08 MANGAN ZINC FERRITE CORE WITH HIGH INITIAL PERMEABILITY
US3860524A (en) * 1969-12-29 1975-01-14 Spang Ind Inc High permeability manganese-zinc ferrites
US3839029A (en) * 1971-07-08 1974-10-01 Xerox Corp Electrostatographic development with ferrite developer materials
US3929657A (en) * 1973-09-05 1975-12-30 Xerox Corp Stoichiometric ferrite carriers

Also Published As

Publication number Publication date
US4075391A (en) 1978-02-21

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